使用 javascript/jquery 生成页码?

发布于 2024-08-26 20:43:12 字数 1466 浏览 4 评论 0 原文

如何使用 javascript/jquery 生成如下页码?

如果选择第 5 页,我必须显示 3,4 和 6,7 以及 1,最后一页以及上一页、下一页... 任何建议....

编辑:

如何处理使用这些分页 div 的 json 数据? (即)我的json数据包含50条记录 我想要第 1 页中的 10 等等...如何使用这些数字对 json 数据进行分页...

我想要一个 jquery 函数来传递 currentpageno,lastpagenumber 并且该函数应该生成页码,例如以下对我来说

如果是第一页

istpage

如果它在中间,则

寻呼机

如果是最后一页,

lastpage

第二次编辑:

我已经尝试过此功能,但似乎没有获得所需的结果

function generatePages(currentPage, LastPage) {
    if (LastPage <= 5) {
        var pages = '';
        for(var i=1;i<=5;i++)
        {
            pages += "<a class='page-numbers' href='#'>" + i + "</a>"
        }
        $("#PagerDiv").append(pages);
    }
    if (LastPage > 5) {
        var pages = '';
        for (var i = 1; i <= 5; i++) {
            pages += "<a class='page-numbers' href='#'>" + i + "</a>"
        }
        $("#PagerDiv").append(pages);
    }
}

我有 lastPagecurrentPage 值,请帮助我得到这个...

How to generate page numbers like the below using javascript/jquery?

If the 5 th page is selected i have to show 3,4 and 6,7 and also 1,last page with prev,next...
Any suggestion....

EDIT:

How to work with json data that use these pagination div? (ie) My json data contains 50 records
I want to 10 in page 1 and so on... How to paginate json data with these numbers...

I want a jquery function to pass currentpageno,lastpagenumber and the function should generate me page numbers like the below for me

If it is the first page

istpage

If it is in the middle,

Pager

If it is the last page,

lastpage

Second EDIT:

I have tried this function but doesn't seem to get the desired result

function generatePages(currentPage, LastPage) {
    if (LastPage <= 5) {
        var pages = '';
        for(var i=1;i<=5;i++)
        {
            pages += "<a class='page-numbers' href='#'>" + i + "</a>"
        }
        $("#PagerDiv").append(pages);
    }
    if (LastPage > 5) {
        var pages = '';
        for (var i = 1; i <= 5; i++) {
            pages += "<a class='page-numbers' href='#'>" + i + "</a>"
        }
        $("#PagerDiv").append(pages);
    }
}

I have the lastPage and currentPage values please help me out getting this...

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评论(4

不…忘初心 2024-09-02 20:43:12

您正在寻找的称为“分页”,并且(一如既往)有一个 jQuery 插件可以为您完成这项工作:

http://d-scribe.de/webtools/jquery-pagination/demo/demo_options.htm

(下载它此处


编辑:由于您似乎无法使其正常工作,因此这是一种方法(几种不同的方法)如何使用该插件。

第 1 步: 从 JSON 数据生成标记,如下所示:

<div id="display">
    <!-- This is the div where the visible page will be displayed -->
</div>

<div id="hiddenData">
    <!-- This is the div where you output your records -->
    <div class="record">
        <!-- create one record-div for each record you have in your JSON data -->
    </div>
    <div class="record">
    </div>
</div>

其想法是在单击页面链接时将相应的记录复制到显示 div。因此,该插件提供了 pageSelect 回调函数。 第2步是实现此功能,例如:

function pageselectCallback(pageIndex, jq){
    // Clone the record that should be displayed
    var newContent = $('#hiddenData div.record:eq('+pageIndex+')').clone();
    // Update the display container
    $('#display').empty().append(newContent);
    return false;
}

这意味着每条记录有一页。如果要每页显示多条记录,则必须对上述函数进行相应修改。

第三步也是最后一步是正确初始化整个过程。

function initPagination() {
    // Hide the records... they shouldn't be displayed
    $("#hiddenData").css("display", "none");
    // Get the number of records
    var numEntries = $('#hiddenData div.result').length;
    // Create pagination element
    $("#pagination").pagination(numEntries, {
        num_edge_entries: 2,
        num_display_entries: 8, // number of page links displayed 
        callback: pageselectCallback,
        items_per_page: 1  // Adjust this value if you change the callback!
    });
}

因此,您只需从 JSON 数据生成 HTML 标记,然后调用 init 函数即可。

这并不难,不是吗?

What you are looking for is called "pagination" and there's (as always) a jQuery plugin that does the job for you:

http://d-scribe.de/webtools/jquery-pagination/demo/demo_options.htm

(Download it here)


Edit: Since you don't seem to be able to get it working, here is one way (of several different) how you can use the plugin.

Step 1: Generate markup from your JSON-data like the following:

<div id="display">
    <!-- This is the div where the visible page will be displayed -->
</div>

<div id="hiddenData">
    <!-- This is the div where you output your records -->
    <div class="record">
        <!-- create one record-div for each record you have in your JSON data -->
    </div>
    <div class="record">
    </div>
</div>

The idea is to copy the respective record to the display div when clicking on a page-link. Therefore, the plugin offers a pageSelect-callback function. Step 2 is to implement this function, for instance:

function pageselectCallback(pageIndex, jq){
    // Clone the record that should be displayed
    var newContent = $('#hiddenData div.record:eq('+pageIndex+')').clone();
    // Update the display container
    $('#display').empty().append(newContent);
    return false;
}

This would mean that you have one page per record. If you want to display multiple records per page, you have to modify the above function accordingly.

The third and final step is to initialize the whole thing correctly.

function initPagination() {
    // Hide the records... they shouldn't be displayed
    $("#hiddenData").css("display", "none");
    // Get the number of records
    var numEntries = $('#hiddenData div.result').length;
    // Create pagination element
    $("#pagination").pagination(numEntries, {
        num_edge_entries: 2,
        num_display_entries: 8, // number of page links displayed 
        callback: pageselectCallback,
        items_per_page: 1  // Adjust this value if you change the callback!
    });
}

So, you just have to generate the HTML markup from your JSON data and call the init-function afterwards.

It's not that difficult, is it?

北城挽邺 2024-09-02 20:43:12

是的@SLaks是对的。这里没什么太疯狂的。您将有 2 个变量 currentPageNumber 和 lastPageNumber。

$("div.paginator").append("<a...>prev</a>");
$("div.paginator").append("<a...>1</a>");

for (x = (currentPageNumber - 2; x <= (currentPageNumber + 2); x++) {
    $("div.paginator").append("<a...>"+ x +"</a>");
} 

$("div.paginator").append("<a...>"+ lastPageNumber +"</a>");
$("div.paginator").append("<a...>next</a>");

// you could apply styles to and a tag in the div.paginator
// you could apply a special class to the a tag that matches the currentPageNumber 
// you can also bind some click events to each a tag and use the $(this).text() to grab the number of the page to go to

yeah @SLaks is right. nothing too crazy here. You will have 2 variables currentPageNumber and lastPageNumber.

$("div.paginator").append("<a...>prev</a>");
$("div.paginator").append("<a...>1</a>");

for (x = (currentPageNumber - 2; x <= (currentPageNumber + 2); x++) {
    $("div.paginator").append("<a...>"+ x +"</a>");
} 

$("div.paginator").append("<a...>"+ lastPageNumber +"</a>");
$("div.paginator").append("<a...>next</a>");

// you could apply styles to and a tag in the div.paginator
// you could apply a special class to the a tag that matches the currentPageNumber 
// you can also bind some click events to each a tag and use the $(this).text() to grab the number of the page to go to
千里故人稀 2024-09-02 20:43:12

使用 这个那个插件。它们都是简单的 html 分页插件。将所有内容一次性放入 html 中,并使用其中之一进行分页。

Use THIS or THAT plugin. They're both easy html pagination plugins. Put everything in the html at once and paginate with one of those.

烙印 2024-09-02 20:43:12

添加两个新的隐藏输入

<input type='hidden' id='current_page' />  
<input type='hidden' id='show_per_page' /> 

接下来添加一个空 div 以创建分页控件

<!-- An empty div which will be populated using jQuery -->  
<div id='page_navigation'></div>

$(document).ready(function(){

    //how much items per page to show
    var show_per_page = 5;
    //getting the amount of elements inside content div
    var number_of_items = $('#content').children().size();
    //calculate the number of pages we are going to have
    var number_of_pages = Math.ceil(number_of_items/show_per_page);

    //set the value of our hidden input fields
    $('#current_page').val(0);
    $('#show_per_page').val(show_per_page);

    //now when we got all we need for the navigation let's make it '

    /*
    what are we going to have in the navigation?
        - link to previous page
        - links to specific pages
        - link to next page
    */
    var navigation_html = '<a class="previous_link" href="javascript:previous();">Prev</a>';
    var current_link = 0;
    while(number_of_pages > current_link){
        navigation_html += '<a class="page_link" href="javascript:go_to_page(' + current_link +')" longdesc="' + current_link +'">'+ (current_link + 1) +'</a>';
        current_link++;
    }
    navigation_html += '<a class="next_link" href="javascript:next();">Next</a>';

    $('#page_navigation').html(navigation_html);

    //add active_page class to the first page link
    $('#page_navigation .page_link:first').addClass('active_page');

    //hide all the elements inside content div
    $('#content').children().css('display', 'none');

    //and show the first n (show_per_page) elements
    $('#content').children().slice(0, show_per_page).css('display', 'block');

});

function previous(){

    new_page = parseInt($('#current_page').val()) - 1;
    //if there is an item before the current active link run the function
    if($('.active_page').prev('.page_link').length==true){
        go_to_page(new_page);
    }

}

function next(){
    new_page = parseInt($('#current_page').val()) + 1;
    //if there is an item after the current active link run the function
    if($('.active_page').next('.page_link').length==true){
        go_to_page(new_page);
    }

}
function go_to_page(page_num){
    //get the number of items shown per page
    var show_per_page = parseInt($('#show_per_page').val());

    //get the element number where to start the slice from
    start_from = page_num * show_per_page;

    //get the element number where to end the slice
    end_on = start_from + show_per_page;

    //hide all children elements of content div, get specific items and show them
    $('#content').children().css('display', 'none').slice(start_from, end_on).css('display', 'block');

    /*get the page link that has longdesc attribute of the current page and add active_page class to it
    and remove that class from previously active page link*/
    $('.page_link[longdesc=' + page_num +']').addClass('active_page').siblings('.active_page').removeClass('active_page');

    //update the current page input field
    $('#current_page').val(page_num);
}

Add two new hidden inputs

<input type='hidden' id='current_page' />  
<input type='hidden' id='show_per_page' /> 

Next add an empty div to create pagination controls

<!-- An empty div which will be populated using jQuery -->  
<div id='page_navigation'></div>

$(document).ready(function(){

    //how much items per page to show
    var show_per_page = 5;
    //getting the amount of elements inside content div
    var number_of_items = $('#content').children().size();
    //calculate the number of pages we are going to have
    var number_of_pages = Math.ceil(number_of_items/show_per_page);

    //set the value of our hidden input fields
    $('#current_page').val(0);
    $('#show_per_page').val(show_per_page);

    //now when we got all we need for the navigation let's make it '

    /*
    what are we going to have in the navigation?
        - link to previous page
        - links to specific pages
        - link to next page
    */
    var navigation_html = '<a class="previous_link" href="javascript:previous();">Prev</a>';
    var current_link = 0;
    while(number_of_pages > current_link){
        navigation_html += '<a class="page_link" href="javascript:go_to_page(' + current_link +')" longdesc="' + current_link +'">'+ (current_link + 1) +'</a>';
        current_link++;
    }
    navigation_html += '<a class="next_link" href="javascript:next();">Next</a>';

    $('#page_navigation').html(navigation_html);

    //add active_page class to the first page link
    $('#page_navigation .page_link:first').addClass('active_page');

    //hide all the elements inside content div
    $('#content').children().css('display', 'none');

    //and show the first n (show_per_page) elements
    $('#content').children().slice(0, show_per_page).css('display', 'block');

});

function previous(){

    new_page = parseInt($('#current_page').val()) - 1;
    //if there is an item before the current active link run the function
    if($('.active_page').prev('.page_link').length==true){
        go_to_page(new_page);
    }

}

function next(){
    new_page = parseInt($('#current_page').val()) + 1;
    //if there is an item after the current active link run the function
    if($('.active_page').next('.page_link').length==true){
        go_to_page(new_page);
    }

}
function go_to_page(page_num){
    //get the number of items shown per page
    var show_per_page = parseInt($('#show_per_page').val());

    //get the element number where to start the slice from
    start_from = page_num * show_per_page;

    //get the element number where to end the slice
    end_on = start_from + show_per_page;

    //hide all children elements of content div, get specific items and show them
    $('#content').children().css('display', 'none').slice(start_from, end_on).css('display', 'block');

    /*get the page link that has longdesc attribute of the current page and add active_page class to it
    and remove that class from previously active page link*/
    $('.page_link[longdesc=' + page_num +']').addClass('active_page').siblings('.active_page').removeClass('active_page');

    //update the current page input field
    $('#current_page').val(page_num);
}
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